leptomycin b

Leptomycin B (LMB) 是一种抗真菌抗生素，可阻断真核细胞周期，抑制蛋白出核转运。Leptomycin 通过半胱氨酸残基处的共价修饰使 CRM1 exportin 1失活。

Leptomycin B (GMP)是 Leptomycin B 的 GMP 级别试剂。Leptomycin B 是一种抗真菌抗生素，可阻断真核细胞周期，抑制蛋白出核转运。Leptomycin B (GMP) 通过半胱氨酸残基处的共价修饰使 CRM1 exportin 1失活。

Leptomycin A, a metabolite derived from Streptomyces, acts as an inhibitor of CRM1 (exportin 1) and effectively suppresses HIV-1 replication. Compared to Leptomycin B, it exhibits lesser potency. Leptomycin A hampers the interaction between CRM1 and nuclear export signals, effectively hindering the nuclear export of a wide array of proteins.

Anguinomycin A is an antibiotic first isolated from a Streptomyces sp. and analog of leptomycin B that is highly cytotoxic to mouse P388 leukemia cells in vitro (IC50 = 0.1-0.2 ng/ml). It also demonstrates antitumor activity at 62.5 μg/kg/day against Lewis lung carcinoma in mice.